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Colorimetric Hardness Analyzer Envirolyzer EZ1000 Series

hach-ez1000-kolorimetricheskij-analizator-zhestkosti.jpgEZ1016.99001C02 total water hardness analyzer

SKU: EZ1016.99001C02

Manufacturer: Hach

Availability: Order only

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The Envirolyzer EZ1000 Series Hardness Analyzers use a colorimetric analysis method.

Standard measuring range:

  • Total hardness, calcium hardness 0.025 - 1 mg/L CaCO3
  • Magnesium hardness 0.1 - 1 mg/L CaCO3

Various ranges are optionally available ranging from 0.0025 to 100 mg/L CaCO3. Contact us if you need a consultation or other configuration of the analyzer.


Description

Description

  • EZ1016 Total hardness (article EZ1016.99001C02)
  • EZ1017 Calcium hardness (article EZ1017.99001C02)
  • EZ1304 Total and calcium hardness (article EZ1304.99001C02)
  • EZ1306 Total, calcium, magnesium hardness (article EZ1306.99001C02)

Effective hardness control is the key to maintaining water stability in many processes. Hardness is used in conjunction with alkalinity, pH, TDS / conductivity and temperature to calculate the Langelier Saturation Index (LSI) to measure the tendency of water to corrode metals or scale up in a pipe. With continuous monitoring of these parameters, the operator is able to adjust the process to ensure compliance and maximize efficiency.

Automatic calibration, validation, and cleaning functions are built into the controller software to improve analytical performance, maximize uptime and minimize operator intervention. Precise micropumps doze all reagents. The sampling lines and analysis vessel are cleaned with demineralized water to eliminate cross-contamination between samples. The electronics and liquid reagent compartments of the analyzer are strictly separated.

Method Description for Determining Total Hardness with the Envirolyzer Analyzer

In an alkaline environment, calcium or magnesium react with calmagite to form a red complex. EDTA is added, which binds to calcium and magnesium, and the color turns blue again. The change in absorption is measured at 610 nm.

The analysis container is cleaned and filled with fresh sample. After sampling and adding acid, buffer and color solution, the initial absorbance is measured at 610 nm. The EDTA solution is then added and after a period of stirring to obtain full color development, the final absorbance value is determined. From the obtained values of optical density, the total concentration of hardness is calculated in accordance with Beer's law.

EZ Analyzer Method for Calcium Hardness determination

Determination of the concentration of calcium in water is based on the reaction of free calcium with hydroxynaphthol blue in an alkaline solution with the formation of a purple-red color. The indicator-calcium complex is released when EDTA is added, causing a blue color. The color change from red to blue is a measure of the amount of calcium present in the sample. Color change is measured at 610 nm.

The magnesium hardness concentration is calculated based on the total hardness and calcium hardness results.

Water hardness analyzer specifications

  • Method of measurement:
    Colorimetric measurement at 610 nm using calmagite / EDTA.
    Colorimetric measurement at 610 nm using hydroxy naphthol blue / EDTA.
  • Cycle time 10 min (dilution + 5 min) per parameter
  • Automatic cleaning Yes
  • Calibration automatic 2 points; freely programmable frequency
  • Ambient temperature 10 - 30 °C ± 4 °C deviation at 5 - 95% RH (non-condensing)
  • Reagent requirements store at 10 to 30 °C.
  • Flow rate 100 - 300 ml/min
  • Sample temperature 10 - 30 °C
  • Sample quality maximum particle size 100 μm, < 0.1 g/l; Turbidity < 50 NTU
  • Output: Modbus RS485;
  • Power supply: 100 - 240 VAC, 50/60 Hz
  • Dimensions (H x W x D) 690 mm x 465 mm x 330 mm
  • Weight 25 kg
Specifications

Specifications

Application areaEnvironmental monitoring, Wastewater, Treatment facilities, Equipment for water utilities, Process control, Water supply
TypeIndustrial
IndustryEcology, Power generation, Chemical, Municipal
ParametersHardness Ca and Mg, Hardness of water, Hardness, Calcium Hardness
Measurement Range0,025 - 1 mg/L CaCO3
Measurement methodColorimetric
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